Covering Ammanford
Ammanford is about 14 miles east of Carmarthen. We also cover Pontarddulais (6 miles to the south), Ystalyfera and Llanelli.
Homes in Dyfed
Across Wales you find valley terraces, coastal towns, rural stone houses and newer estates, so access, slopes and local materials all feature in the design.
What is included in a basement conversion in Ammanford?
A basement conversion turns an existing cellar into dry, usable rooms, or excavates a new basement under a house. Converting an existing cellar is far simpler and cheaper than digging a new one, and often does not need planning permission.
- Planning and building regulations checks under Welsh rules
- Lightwells and windows for daylight and escape
- Ventilation, heating and electrics
How much should I budget for a basement conversion?
Typical ranges for basement and cellar conversions. Ground conditions, access and specification move the final figure, which we fix in writing before work starts.
| Basement and cellar conversions | Guide price incl. VAT |
|---|---|
| Existing cellar conversion | £1,900 to £3,000 per m² |
| New basement excavation | £4,200 to £6,600 per m² |
What approvals does a basement conversion need in Wales?
In Wales the planning rules, including what counts as permitted development, are set by the Welsh Government, and Welsh building regulations differ in places from England’s. We check both against your house before drawings are finalised, and handle party wall notices where needed.
In Wales an existing cellar conversion usually does not need planning permission; new excavation and lightwells may.
What can affect a basement conversion?
- Groundwater levels drive the waterproofing design and cost.
- A pump for the drainage system needs a battery back-up.
How does the project run?
- Tell us about the project. Call, use the guide price tool or send the form with a few photos and a postcode.
- Survey at your house. We look at the existing structure, services and access, and agree what the design needs to achieve.
- Drawings, approvals, written quote. We prepare the design, apply for the approvals it needs, and give you a fixed price in writing.
- We build it. Work follows an agreed programme, with inspections at each stage and a final sign-off.
What people ask before starting
How much does a basement conversion cost?
Converting an existing cellar costs about £1,900 to £3,000 per square metre including VAT. A new excavated basement is around £4,200 to £6,600 per square metre.
Does a cellar conversion need planning permission?
Usually not if nothing changes outside. New basements and lightwells often do.
Do you work in Ammanford?
Yes. Ammanford is within our coverage for basement and cellar conversions, along with nearby Pontarddulais and Ystalyfera.
Other towns nearby
- Basement and cellar conversions in Pontarddulais
- Basement and cellar conversions in Ystalyfera
- Basement and cellar conversions in Llanelli
- Basement and cellar conversions in Neath
Learn more about basement and cellar conversions, or see every project we cover in Ammanford.